Evaluation method for deflection of Donut type Biaxial Hollow Slab in fire

This paper is to analyze the Biaxial Hollow Slab under fire based on the curvature theory and to present simply evaluation method. Generally, In fire, The RC members become change mechanical properties or material thermal properties when they are heated. Because it caused serviceability problems on structures. It is necessary to evaluate the behavior of members in fire. The Biaxial Hollow slab is effective structure system that could be decreased self weight of slab using hollow shapes in slab. And its section differs from that of reinforced concrete slab. So, It is expected that the Biaxial Hollow slab shows different behavior of that. Thus, This study will evaluate the flexure behavior of Biaxial Hollow slab using fire test and provide a basic data for application of that